Manufacture of paper-board.



M. L. TWOMLEY MANUFACTURE OF PAPER BOARD.

APPLICATION FILED MAR. 91 1912.

Patented Oct. 16, 1917.

2 SHEETS-SHEET I.

M. L. TWOMLEY. MANUFACTURE OF PAPER BOARD.

APPLICATION FILED MAR. 9. 1912.

Patented. Oct. 16, 1917.

ranLyAN LJTWOMLEY, or ANDERSON, INDIANJ-r, ASSIGNOR, BY MESNE AssIeNMENTs, 1 T SEFTON MANUFACTURING coMrANY,,oF MILLBRoOK, NEW YORK, A conronateasers. 1

To all whom ii may concern:

Be it known thatLiInL A L; rwomm,

a citizen of the United Sta tes residing at Anderson, in the county of Madison and f. e of Indiana 5 have invented certain new anu useful lin n'oveinentsin the Manufacture of Paper-Board of Which the follow inn; is aspecification.

The product referred to comprises a oentrajl corrugated strip or sheet of paper upon opposite sides" "t which are cemented strips or sheetswof piain paper the fabric being used for a variety ofipurposes dependlngrrn bores for Which the stiffer, hander vani eties anneasureupon its degree'of stiffness, as for carpet lining a nd packing "for Which the softer arieties are used "and" for forming are used; My invention is not concerned with the application of the first sheetof lining or covering to the corrugated paper but on the contrary it operates npon the in termediate product consisting of the corrugated paper with a sheet of lining applied to one side thereof and completes the product by applying the linin g te the other side of y the corrugated paper i Prior to my invention it has been customary in applying the second liner to the lar board fed betweentheinelnbers of a steam boxes or plates bearing upon 5013190- dryine; device usually iconsistin gof "a p air of site sides of the board. Anuinrber ofobjec; tions however are found to the employunent 1 of a machine-of this character among Which I r may be mentioned that considerable tension must he; put upon the board to draw it if siderable nicisturetothe fabricarpon its in tlirongrliwtlie drying device whereby it is i sometimes subjected to injury. ,ricndther and perhaps more important objectionarises from the fact that the paste supplies conteirion which}upon reachingithev drying deyice is converted into steam. The board is more orless softened thereby and further theidrymust escape through the ends of "the corirui'ugis delayed by the confined steam which nations or through the body of the fabric before the drying is te ifectual. It has also been proposedito heat :the rollerS which at MANUFACTURE OF EATER-BOARD.

[Specification of Letters Patent. J Application fiiednarch e, 1912. Serial No. 682,737.

r the machine is necessarily very slow.

In order to overcome these obgections to Patented Oct. 16, 1917.,

ply the liner to the corrugated fabriccand by passing the latter around one of gthe rol lers to secure the necessary drying. -1Tl'iis device is of course ent' ely inapplicable: to leard which tohe rigid and fiatenchfurthermore the drying is limited by thev size of the roller, but a more potent obj ection.;to all the devices of'the prior art is thatiby reason of the necessity of drying out: the board as described above the operationiof the machine of the .prior art, I provideia machine in Which the faces of the fabric which are to be securedtogether are heated to the highest degree that they Will stand without injury vjust prior to the instant when the cementing material (which is pref erabiy silicate of soda) isapplied. The cement is used in the smallest quantity practicalcle and preferably applied to the ridges or ribs of the -;ccrrugated material only. The inner is then applied immediately While the materials to be joined are still exceedingly hot and the latter are next passed directly lr-etween a pair of rollers which give the necessary compression to cause them to ad here and the completed fabric isthen led auiay. Ordinarily in the practice of my invention and preferably, I apply no heat whatever after the cement has been applied tosthe board for I find that the heat which has' been trzmsinitted t0 the adjacent faces efthe corrugated and plain papers respectivel-y is amply ,suflicient to thoroughly and also instantaneously set the cement employed. If desired, however or found necessary by reason of the character of cement enicioued or the 'oua ntit thereof, further heating of the fabric may be provided for after its component parts are united. An important feature of my 1nvent1on, however, lies in the fact that by the application ofheat to theradjacent faces of the components of the fabric and the immediate application of cement in sinallquantity and of pressure, thefabric is thoroughly dried,-and little or no steam released to injure thesaine or interfere With the rapidity of operation By reason of my improve- {have idescribed below with considerable detail machines embodying my invention, it

to be understood that my invention is not limited to either .or both of them but embraces a wide range of equivalent construc-- tions coming within the scope of the following claims. a

In the accompanying drawings "forming a part of thisapplication, Figure 1 is a view partly in side elevation and partlyin trans- Verse section through a preferred form of designated by'numeral 6 and consists in a pair of end frames of which but one is shown and between which the rotary parts are ournaledr A hollow drum 7 is mounted upon trunnions 3ournaled m the frame one of which is shown at 8 in dotted lines and is hollow to form a passage for a steam pipe'8 by which, in the particular embodiment shown, the: drum is heated. Beyond its bearing thetrunnionS is provided with a pair of belt pulleys 9, the connections of which will be presently explained.

At a suitable point in the'framework and as shown above the drum 7, are mounted the pressure rolls 10-11 between which the plain sheet and the corrugated strip lined or faced upon one side are fed together, After the product has passed through the rolls 1011, it is received between the parallel adjacent faces of a pair of slatted or lagging belts'12-13 by which it is conveyed from the machine and if desired to some point for further treatment. These belts are of a character well known in this art and the upper beltv comprises a 'pair of sprocket chains 14 arranged at opposite sides of the machine and each passing around a forward sprocket '15 and a rear sprocket 16, the two chains being connected by a series of slats 17 connected to alternate linksof the chains as shown. The lower belt of lagging is similarly composed, the chains being mounted upon the front andrear sprockets 18 and 19. In Fig. 1 the machine is shown broken away but it will be understood that the horizontal run of the chains isof considerable length. -Upon the shaft which bears thelower rear sprocket wheels is keyed a gear 20 which meshes with a gear 21 on the upper rear sprocket shaft to drive the chains in unison, and the gear 20 also meshes with a gear 22 on a stub power shaft 23 which carries a driving pulley 24 driven from any suitable source of power and adapted to be connected "with the gear 22 by any suitable clutch mechanism, indicated in dotted lines at 25.

- Upon the shaft which carries the upper forward sprocketsis keyed a pulley 26 which through the medium of a belt 27 arranged upon one of the pulleys 9'revolves the heat ing drum 7. Immediately above the drum 7 the paste box 28 is arranged upon parallel horizontal guides 29 and within the box is journaled a paste-applying. roller 30 which,

by the movement of the box upon its guides, may be brought into operative relation-with the lower pressure roll 11 or removed therefrom,and a doctor 31 is adjustable in its bearings toward and from the paste roll to regulate [the thickness of the coat of paste thereon. In operation the paste roll is normally drivenfromione of. the pulleys 9 on the heating drum andfforthis purpose is provided with a belt pulley 32 about which 7 forded by a ratchet wheel 34E keyed to the and said pulley, 9 the driving belt 33 passes.

shaft'and a pawl 35 carried bythe pulley 32, v

the drive obviously being effective only in one direction.v f 1 e With the construction shown a limited movement ofthe box 28 on its guides may be hadwithout disturbingthe connecting belt 33- by reason of the elasticity and looseness 'of the latter.

'When the machine is stopped it is desirable that the revolution of the paste roller be not suspended for a prolonged period as otherwise a ridge or ridges are apt to be formed thereon atthe level of the surface of i the machinexis at rest. For this the shaft of the paste roller carries a friction wheel 36 which when the paste roll is withdrawn from its normal operative position may be brought into contact with a friction wheel 37 fast upon the shaft 38 of a worm wheel 39. The latter. is driven by a worm.40 upon the shaft of an electric motor 41 the current for which is controlled by a switch 42. In this preferred form of construction the shifting of the paste box and roll and energizing of; the motor is jcontrolled by the operation of a shifting rod 43.. This rod is provided with a pair of pins 51, 51 between which the upper end of the knife switch 42 extends,and to its forward end is pivoted a lever 4:7 'fulcrumed upon the frame and carrying at its upper end a segment gear 48. The latter meshes with a gear 49 also journaled in the frame of'the machine and bean ing upon its shaft an arm 50 connected by a link to the paste box. A suitable handle 44 is provided upon'thef forward end of the shifting rod or at any other point where considerations of convenience may suggest.

.nnd ratchet connection 3-1 the=paste roll anae ia It is cl'ear that by mo ning theshittingrod, the paste receptacle and roll are first with- *drawnand then as themovement' continues the electric switch is j closed, so that the mo- 1 "tor l-1 is started, into operation "at-about the ,the pulley 24: and gear 2:2, the latterbeing slidabjly'mountedupon shaft 23. h sorew 26 is "formed or fixed upon theshaiit23 and is engaged by a threaded collar)? which carriespins'27 engaginga'groove 28 upon the hulrof pinion 22; It willibe understood froin thisconstruction "that by oscillating the [arm 41-5 the clutch will bethrowninto "and out-otoperation. i

In practice the operator first throws the machinery into operation'by shifting the clutch 25, and the paste rollgwhich has been theretofore released from operative connection with theelectric motor,'-is thrown into contact'with'the corrugated paper. When it i is desired to stoptheinachine. a movement of theshiftinq rod lii shifts'the clutch,- and a forward movement of the rod 43 Withdraws the paste roll from contact-with the corrugated paper brings its "friction wheel 36 intocontact withthe friction'wheel37 and starts the 'motor. Byreason ofthe pawl .lS'ZQVOlVGCl without revolving-the drum 7 or any of the connecting parts or mainmachinery when the'T011530 is revolved through the electric motor. I

an the construction shown in Fig. 1' an endless belt 52*co6perates with the drum "7 to hold the corrugated paperfinclose co.n tact therewith and is otherwise guided by the idlerollshiifht, 55 and, 56. At 57 I ihave shown tsteam hoX or'hollow steamheated plate supportedat goneedge close to the biteof thefrolls 10 11 by brackets 58 and slanting upwardly.therefrom and held an this posit onloy pair of braces attached te the plate at one end- 59 andat the other 60 to "an i'ipright 61; forming part of the frameworlp ,over the upper surface of thisste am box passes {the liner to he applied to the corrugated paper, and it is held in contact with the steam box by a oast plate 62; pivoted at 63 ytoFthefitramework, and-ad justed hyflexihlecords or cablesfia passing around and secured tofdrums 65; fThefl atter are mounted mp0s "journals 66 an'd may be mits the fabric to immediately cool.

adjusted in *any'well-known manner as by "a ratchetand pawl 67 shown indotted lines in Fig. 1. Between the drum 7 and the compression rolls l0-11 extends a steamheated breastGS which in this instance con sists in a hollow casting with suitable openings :69 for the supply of steam thereto.

Thecorrugated'paper 70 with one liningor facing applied thereto-as shown, is fed into the machine and around thedrum 7 which is heated bysteam admitted through the pipe 8. II" a beltor apron 5'2 isused in connection by, or if no apron or belt beemployed the cor rugated strip or sheet is fedover the roller and around the druin7 as before but under sui'licient tension to hold it closely of the drum 7 the sheetof corrugated matei ial is passed directlyinto contact with the breast 68 by which itis further heated and brought, so far as the'pealrs or ridgesofthe corrugations are concerned, to a high temperature whichhardensthe corrugation. In

this state the boardis passed around the lower one of thecompressronrolls, 1n the meantime and ju-stbefore itenters the bite of the rolls being coated with cementing ma terial by roller 30 alo-ng a narrow strip atthe vpeak of eachcorrugation.

I The silicate of soda or other adhesive employed 18 applied in'the smallest quantity that will satisfactorily accomplish the result aimedat. In the meantime, the sheet of lining, facing material or paper-to be applied to the corrugated paper to complete the board is fed down over the steam box 57 and-between the latter and theplate'GQ, so that its dower face, to wit, the side which is to be applied to the corrugated paper is likewise heated to a high temperature and the construction is such that the heating is carried forward practically until the linerenters the h'ite of therolls. Thus, at this point,the adjacent faces of the liner and thecorrugated paper havebeen thoroughly dried and heated and the adhesive applied to the latter. The two layers then pass together-between thecompressing" rolls which are so spaced as to eX- ert: a slight pressureuponi them which causes the layersto adheretogether. The product,

which \now comprises the corrugated "paper with aliningoneach side thereof, passes in a horizontal plane to and'between the endless beltsor lagging as shown which per- In some metances, witha slow drying cement it may be advisable to employ some suitable heating means the'stea'm boxesof the prior art. Again if desired, I may substitute for the smooth surfaced drum 7 a drum 7"(see Fig.2) havingcorrugations 4t? fitting the corrugations of the board. In such a* structure' the boardiis more evenly heated with this drum the corrugated'boalrd or-paper -1S pressed-into contact with the latter there :againstthe same. From the circumference of my invention but omitting others.

framework, lagging, pressure rolls and heatthough this .is not necessary since 'thecement is only applied to thenarrow strips at the apices of thecorrugations.

In Fig. 3 of the drawings I have shown a modification embracing certain featurktlas T e ing means for the lin ng strip preparatory to its application to the corrugated board, are substantially as in the machine shown in Fig. 1. For the drum 7 of the preferred form, however, I have substituted a stationary heated surface which takes the form of a continuation of the steam heated'breast 68' shown in Fig. 1 andv extends from the front of the machine beneath the paste box and upwardly into proximity to the pres sure roll 11. The endless belt 69. serves to hold the cardboard against the breast and is carried by the idle rolls 70, 71 and 72. Powerfis'transmitted tothe paste roll from the upper sprocket shaft by belts 73 and 74: which engage pulleys 75 upon the shaft .77 and pulleys on the sprocket shaft and paste rolljournal respectively. The pastefbox 78 is in this instance. manipulated 'bythe handle 79 the shaft of which is connected by links 80 and 81 withthe pastebox.

Itwill now be seen thatin my invention whichever form be adopted the major por tion or all of theheating is done before the component parts of the fabric reach the paste applying roller and the compression rolls, and that the heating is applied thereto 011 the faces which are to be caused to adhere and, though this is SO, .yet by reason of the propinquity of the adhesive applying roller to the bite of the compression rolls,

but littleadhesive need be applied and the heat retained by the paper is sufficient ordinarily with a suitable adhesive to cause the evaporation of all the moisture in the adhesive within a very short period after it is applied. It is therefore unnecessary ordinarily to provide further heating means beyond the compression rolls with their at .tendant. disadvantages and slowv action as set forth above.

,What I claimis;

g 1. In a machine for the manufacture of paper board, a pair of smooth surfaced compression rolls, means for feeding a sheet of corrugated paper lined upon one side thereto, means for-feeding a lining sheet thereto, means extending close to the bite.

of the compression rolls for heating the lining sheet and corrugated sheet respectively directly upon their contiguous surfaces and adhesive applying means arranged between .the compression rolls and one of the heatto'the. rolls, a heated drum 7 and abreast adapted to heat a sheet of corrugated paper fabric.

side and a lining strip thereto, means "for applying adhesive to one of said strips just prior to its entry into the bite of the rolls and means for heating both stripsdirectly npon the faces thereof .whichare tobe.

brought in contactwith each other prior to theapplication of the paste.

. In a device of the class described, a pair of smooth surfaced compression lTOlls, a heat ng drum over whlch a corrugated jstrlp of paper lined uponone side may be passed,-

with its corrugations directly in contact therewith arrangedv 1n advance of said com-' pression rolls, an adhesive applying roll adjacent one of the compression rolls and 7 adapted to apply adhesive to the strip of paper passing around said roll, means for heating a lining strip arranged adjacent the bite of the rolls and means for receiving and carrying away the completed fabric;

I 4l.:-In ,amachine of the class described, a

pair of compressionjrolls 1011, a heating plate 57 arranged adjacent the bite of the rolls and adapted to heat a lining. sheet fed a paste roll movable into and out of contact 'Wlth one of the sheets of material being treated, means for driving the paste roll when in contact with the paper, and supplemental means for driving the paste roll when withdrawn from such contact.

6. In a machine of the class described,

means for bringing the sheets of material 1nto close contact, means for feeding the material through the machine, a paste roll movable into and out. of contact with the material, connections for rotating the roll from the feeding means, and means for rotating the roll when thefeeding means is at rest.

7. In a machine of the class described,

flmeans for bringing the sheets ofmaterial into close contact, driven means for receivmg the mater al fromthe first-named means, a paste roll for applying cementmg material to one of the sheets before itisbrought into contact wlththe other, connections whereby the paste roll may bedriven from said re.-

ceiving means, and means'for driving the paste roll when. the receiving means is at rest. v

8., In a machine of the classdescribed, means forbringing the sheets ofmaterial into close contact, lagging for receivingthe material and conveying it from said means,

a paste rollmovable into and out of. contact with the material, connections for rotating the paste roll from the lagging, and means for operating the roll when the lagging is at rest. a

9. In a machine of the class described, means for bringing the sheets of material to be united into contact with each other, lagging for receiving the finished material, driving means for the lagging, a clutch between the lagging and driving means, means for shifting the clutch, a paste roll movable into and out of contact with one of the sheets of material to be united, and means for shitting the roll, means for driving the paste roll when in operative position, and means for driving it when in inoperative position. a

10. In a machine of the class described, a

be shifted.

shaft and the lagging, paste applying mech anism movable toward and from the pressure rolls, an electric motor and connections for driving the paste roll when out of operavtive position, a switch, and a shifting rod 'for controlling the switch, and the positlon of the paste applying mechanism.

12. In a machine of the class described, pressure rolls, lagging for receiving the product therefrom, means for driving the lagging, a paste roll movable toward and from one of the sheets of material treated, permanent connections between the roll and the lagging for driving the roll but permitting the lattor to be driven by other means when the lagging is idle, said connections also permitting the movement of the paste roll toward and from one of the sheets with: out interrupting the connection to the lag ging, and supplemental driving means into engagement with which the paste roll may MELVAN L. TWOMLEY. lVitnesses:

FRANCIS V. POWELL,

RoLLAND M. Pn'r'rrr.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of fatents, Washington, D. 0.

It is hereby certified that the assignee in Letters Patent N 0. 1,243,013, granted October 16, 1917, upon the application of Melvan L. Twomley, of Anderson, Indiana, for an improvement in The Manufacture of Paper-Board, was erroneously described and specified as Sefton Manufacturing Company, whereas said assignee should have been described and specified as Sefton Manufacturing Corporation, as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 20th day of November, A. D., 1917.

[snAn] R. F. WHITEHEAD,

Acting Commissioner of Patents. 

